In depth comparison and review of Sony Alpha77 II ILCA-77M2 and Pentax K-S1. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.
| DESIGN AND DIMENSIONS | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Product Type | Digital camera - SLR with Live View mode, movie recording | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 10.42 cm | 9.3 cm |
| Width | 14.2 cm | 12 cm |
| Depth | 8.09 cm | 7 cm |
| Weight | 647 g | 485 g |
| Body Material | Magnesium alloy | - |
| Enclosure Colour | Black | White | Black |
| Protection | Weatherproof | - |
| SENSOR | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Sensor Resolution | 24.3 Megapixel | 20.12 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor APS HD CMOS | CMOS |
| Total Pixels | 24,700,000 pixels | 20,420,000 pixels |
| Effective Sensor Resolution | 24,300,000 pixels | 20,120,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | APS-C (23.5 x 15.6 mm) |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Special Protect (SP) coating |
| Image Stabiliser | Optical (SteadyShot INSIDE) | - |
| Built-in Optical Image Stabiliser | Yes | - |
| PROCESSOR | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Image Processor | BIONZ X | PRIME MII |
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| LENS | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Lens Mounting Type | - | Pentax KAF2 |
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| FOCUSING | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Auto Focus | TTL phase detection | TTL phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 79 | 11 |
| Auto Focus Features | Predictive Focus Control | - |
| AE/AF Control | Subject-tracking AF, Eye detection AF | Face-priority AF, Subject-tracking AF |
| Face Detection | Smile Shutter | Yes |
| VIEWFINDER | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.5" | - |
| Viewfinder Resolution | 2,359,296 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 1.09x | 0.95x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -2.5 to +1.5 |
| Field of View Crop Factor | 1.5 | - |
| EXPOSURE & WHITE BALANCE | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| ISO (Max) | 25600 | 51200 |
|---|---|---|
| Native ISO | 50-25600 | 100-51200 |
| Light Sensitivity | ISO auto (100-25600), ISO 100 - 25600 | ISO 100-51200, ISO auto (100-51200) |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 1200 | 77 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Programme, automatic, manual, aperture-priority, shutter-priority, shutter & aperture priority |
| Shooting Programs | Landscape, portrait mode, macro, night portrait, night scene, sports mode, sunset, handheld twilight | Landscape, portrait mode, macro, museum, surf & snow, PET, Blue Sky, food, night scene, sunset, candle, night snapshot, night scene with portrait, kids, Stage, night scene HDR, moving object, forest, backlight silhouette |
| Special Effects | Black & White, Sepia, Neutral, Vivid, sunset, soft focus, illustration, landscape, portrait, Water Colour, miniature, clear, deep, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, HDR Painting, Rich-tone monochrome, Soft High-key, Night Scene | Natural, bright, Vibrant, monochrome, Muted, landscape, portrait, Cross Process, Bleach Bypass, Radiant, Reversal Film, Tone Expansion, Cold vintage, Colour Fade, Bold Monochrome, Unicolour Bold, Clear Tone, Warm Fade, Brilliant Colour, Infrared Filter |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, Flash, fluorescent light (cool white), fluorescent light (warm white), 2500K - 9900K, fluorescent light (daylight white), Colour Filter (G7 - M7), Colour Filter (A7 - B7) | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight colour), fluorescent light (daylight white) |
| Shutter Type | Mechanical electronically-controlled | Mechanical electronically-controlled |
| Max Shutter Speed | 1/8000 sec | 1/6000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| White Balance Bracketing | Yes | Yes |
| X-sync Speed | 1/250sec | 1/180 sec |
| Exposure Range | EV -2-17 (ISO 100) | EV 0-22 (ISO 100) |
| DISPLAY | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Type | 3" LCD display | 3" LCD display |
|---|---|---|
| Display Format | 1,228,800 pixels | 921,000 pixels |
| Display Form Factor | Rotating | Built-in |
| Display Features | Contrast control, display brightness control | Colour control, display brightness control |
| FLASH | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Camera Flash | Pop-up flash | Pop-up flash |
|---|---|---|
| Guide Number (m / ISO 100) | 12 | 10 |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction |
| Red-Eye Reduction | Yes | Yes |
| Features | AF illuminator, flash +/- compensation, wireless off-camera control | AF illuminator, flash +/- compensation |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Digital Video Format | AVCHD, H.264 | H.264 |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW) + JPEG, DNG (RAW) |
| Max Video Resolution | 1920 x 1080 | 1920 x 1080 |
| Surround Sound | Dolby Digital AC-3 (2 channel) recording | - |
| Microphone Operation Mode | Stereo | Mono |
| Microphone Features | - | Sensitivity control |
| MEMORY | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Memory Card Slot | Memory Stick PRO Duo card, SD card | SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, Memory Stick XC-HG Duo | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDXC UHS-I Memory Card |
| Image Storage | 6000 x 4000 4240 x 2832 3008 x 2000 6000 x 3376 4240 x 2400 3008 x 1688 |
- |
| Video Capture | AVCHD - 1920 x 1080 - 50 fps - 28Mbps AVCHD - 1920 x 1080 - 50 fps - 24Mbps AVCHD - 1920 x 1080 - 50 fps - 17Mbps AVCHD - 1920 x 1080 - 25 fps - 24Mbps AVCHD - 1920 x 1080 - 25 fps - 17Mbps H.264 - 1440 x 1080 - 30 fps - 12Mbps H.264 - 640 x 480 - 30 fps - 3Mbps |
H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps |
| BATTERY AND CHARGING | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Battery Type | Sony NP-FM500H Lithium Ion | Pentax D-Li109 Lithium Ion |
|---|---|---|
| Details | Sony NP-FM500H Li-ion rechargeable battery (included) | Pentax D-Li109 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 410 shots (EVF on) Photo shooting - 480 shots (LCD Monitor on) |
Photo shooting - 480 shots (50% flash usage) Playback - 4.5 hours |
| CONNECTIONS | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Interface | HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication) | HDMI |
|---|---|---|
| Connectivity Features | Remote live view | - |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | DPOF support, Exif Print support |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | HDMI output USB 2.0 Remote control Microphone |
USB 2.0 HDMI output (19 pin micro HDMI Type D) |
| FEATURES | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 12 frames per second | 3 frames per second, 5.4 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | RGB primary colour filter, date/time stamp, sharpness control, histogram display, AE lock, AF lock, saturation control, Sweep Panorama technology, LCD live view mode, Dynamic Range Optimizer, face detection, Multi-Frame Noise Reduction, Intelligent AUTO (iAUTO), NR Slow Shutter, High ISO NR, Superior Auto mode, BRAVIA Sync function, Translucent Mirror technology | RGB primary colour filter, depth-of-field preview button, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, in-camera film editing, in-camera RAW processing, HDR image enhancement technology, hue control, Eye-Fi Card Ready, LED body illumination |
| OTHERS | Sony Alpha77 II ILCA-77M2 | Pentax K-S1 |
|---|
| Included Accessories | Eyepiece cover, battery charger, body cap, shoulder strap, shoe cap, micro-USB cable | Battery charger, body cap, shoulder strap, eyecup, shoe cap |
|---|---|---|
| Software | Sony Picture Motion Browser, Sony Image Data Converter SR, Sony Image Data Lightbox SR | Drivers & Utilities |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
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